[b]Toolkit 1.2.2[/b] I have also had issues with Toolkit and C-Gate in 1.2.2 On Friday i was configuring a new laptop for one of our techs and instaled the latest versions of everything from the CIS web-site. The new Laptop fired up and connected to C-Bus the first time around, but on the second attempt, gave a message that COM 1 was in use by another application. We did a restart and tried again with no success. We then rook a laptop we know works with all CIS software applications (has for 9 months now), and updated from 1.1.9 to 1.2.2, and experienced the same problem, C-Gate has somehow managed to permanently lock up the serial port. We have one machine that is not fitted with a serial port, so use a USB to serial adaptor, we loaded 1.2.2 onto it and it seems to function ok. It appears that C-Gate somehow is able to permanently lock up the physical serial COM port. Since we have installed USB to serial adaptors to the other two machines, and they are now usable.